I think the talk no jutsu was meant for Megumi, not for Sukuna. And it seems like it worked.
Maybe Yuji tried to tell that I could have gone for a lethal sure hit effect in my domain when he said he wanted to talk to Sukuna, but he took pity on him and chose talk no jutsu as a sure hit effect.
Remember, Megumi took the burden of sure hit effect in fight against Gojo. So, perhaps same thing happened here.
All of this is speculation since Gege didnt explain shit in last two chapters.
Yuji is doing this to bring back Megumi, and it seems like he is close.
Maybe Yuji tried to tell that I could have gone for a lethal sure hit effect in my domain when he said he wanted to talk to Sukuna, but he took pity on him and chose talk no jutsu as a sure hit effect.
Remember, Megumi took the burden of sure hit effect in fight against Gojo. So, perhaps same thing happened here.
All of this is speculation since Gege didnt explain shit in last two chapters.
Yuji is doing this to bring back Megumi, and it seems like he is close.